As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION DAMAGES WERE FOUND ON THE RH HORIZONTAL STABILIZER UPPER SKIN BETWEEN RIB 6 / RIB 9 AND OVER THE FRONT SPAR.(<P ><SPAN>CORROSION WAS REPAIRED ON / ACCORDANCE WITH MEXICANA MRO TRE6755036 REV. A AND BOEING SR 3-5023179131</SPAN></P>)